Find the value of the product 157×14.
The given product 157×14
The product can be written as
157×14 =157×141
Here we can multiply both numerators and denominators.
=15×147
Divide both numerator and denominator by a common factor 7.
=15×14÷77÷7
=15×21
=301
=30
Therefore, value of the product 157×14 is 30
Observe the pattern and complete it.
15873×7×1=111111
15873×7×2=222222
15873×7×3=333333
15873×7×.....=444444
15873×7×5=...................×7×6=666666
Find the value of K such that product of its roots is -7 in the polynomial Kx^2 +21x-14